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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><!--NewPage--><HTML><HEAD><!-- Generated by javadoc (build 1.4.2_13) on Tue Jun 05 11:36:20 GMT-05:00 2007 --><META http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"><TITLE>AbstractCoordinateOperation (Geotools 2.3.x 2.3.2 API)</TITLE><META NAME="keywords" CONTENT="org.geotools.referencing.operation.AbstractCoordinateOperation class"><META NAME="keywords" CONTENT="EMPTY_ACCURACY_ARRAY"><META NAME="keywords" CONTENT="sourceCRS"><META NAME="keywords" CONTENT="targetCRS"><META NAME="keywords" CONTENT="validArea"><META NAME="keywords" CONTENT="transform"><META NAME="keywords" CONTENT="getSourceCRS()"><META NAME="keywords" CONTENT="getTargetCRS()"><META NAME="keywords" CONTENT="getOperationVersion()"><META NAME="keywords" CONTENT="getPositionalAccuracy()"><META NAME="keywords" CONTENT="getAccuracy()"><META NAME="keywords" CONTENT="getValidArea()"><META NAME="keywords" CONTENT="getScope()"><META NAME="keywords" CONTENT="getMathTransform()"><META NAME="keywords" CONTENT="getType()"><META NAME="keywords" CONTENT="equals()"><META NAME="keywords" CONTENT="hashCode()"><META NAME="keywords" CONTENT="formatWKT()"><LINK REL ="stylesheet" TYPE="text/css" HREF="../../../../stylesheet.css" TITLE="Style"><SCRIPT type="text/javascript">function windowTitle(){ parent.document.title="AbstractCoordinateOperation (Geotools 2.3.x 2.3.2 API)";}</SCRIPT></HEAD><BODY BGCOLOR="white" onload="windowTitle();"><!-- ========= START OF TOP NAVBAR ======= --><A NAME="navbar_top"><!-- --></A><A HREF="#skip-navbar_top" title="Skip navigation links"></A><TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0" SUMMARY=""><TR><TD COLSPAN=3 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"><A NAME="navbar_top_firstrow"><!-- --></A><TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3" SUMMARY=""> <TR ALIGN="center" VALIGN="top"> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../overview-summary.html"><FONT CLASS="NavBarFont1"><B>Overview</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-summary.html"><FONT CLASS="NavBarFont1"><B>Package</B></FONT></A> </TD> <TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> <FONT CLASS="NavBarFont1Rev"><B>Class</B></FONT> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="class-use/AbstractCoordinateOperation.html"><FONT CLASS="NavBarFont1"><B>Use</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-tree.html"><FONT CLASS="NavBarFont1"><B>Tree</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../deprecated-list.html"><FONT CLASS="NavBarFont1"><B>Deprecated</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../index-all.html"><FONT CLASS="NavBarFont1"><B>Index</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../help-doc.html"><FONT CLASS="NavBarFont1"><B>Help</B></FONT></A> </TD> </TR></TABLE></TD><TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM></EM></TD></TR><TR><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> PREV CLASS <A HREF="../../../../org/geotools/referencing/operation/AbstractCoordinateOperationFactory.html" title="class in org.geotools.referencing.operation"><B>NEXT CLASS</B></A></FONT></TD><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../../index.html" target="_top"><B>FRAMES</B></A> <A HREF="AbstractCoordinateOperation.html" target="_top"><B>NO FRAMES</B></A> <SCRIPT type="text/javascript"> <!-- if(window==top) { document.writeln('<A HREF="../../../../allclasses-noframe.html"><B>All Classes</B></A>'); } //--></SCRIPT><NOSCRIPT> <A HREF="../../../../allclasses-noframe.html"><B>All Classes</B></A></NOSCRIPT></FONT></TD></TR><TR><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> SUMMARY: NESTED | <A HREF="#field_summary">FIELD</A> | <A HREF="#constructor_summary">CONSTR</A> | <A HREF="#method_summary">METHOD</A></FONT></TD><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">DETAIL: <A HREF="#field_detail">FIELD</A> | <A HREF="#constructor_detail">CONSTR</A> | <A HREF="#method_detail">METHOD</A></FONT></TD></TR></TABLE><A NAME="skip-navbar_top"></A><!-- ========= END OF TOP NAVBAR ========= --><HR><!-- ======== START OF CLASS DATA ======== --><H2><FONT SIZE="-1">org.geotools.referencing.operation</FONT><BR>Class AbstractCoordinateOperation</H2><PRE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A> <IMG SRC="../../../../resources/inherit.gif" ALT="extended by"><A HREF="../../../../org/geotools/referencing/wkt/Formattable.html" title="class in org.geotools.referencing.wkt">Formattable</A> <IMG SRC="../../../../resources/inherit.gif" ALT="extended by"><A HREF="../../../../org/geotools/referencing/AbstractIdentifiedObject.html" title="class in org.geotools.referencing">AbstractIdentifiedObject</A> <IMG SRC="../../../../resources/inherit.gif" ALT="extended by"><B>AbstractCoordinateOperation</B></PRE><DL><DT><B>All Implemented Interfaces:</B> <DD>CoordinateOperation, IdentifiedObject, <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/Serializable.html" title="class or interface in java.io">Serializable</A></DD></DL><DL><DT><B>Direct Known Subclasses:</B> <DD><A HREF="../../../../org/geotools/referencing/operation/DefaultConcatenatedOperation.html" title="class in org.geotools.referencing.operation">DefaultConcatenatedOperation</A>, <A HREF="../../../../org/geotools/referencing/operation/DefaultSingleOperation.html" title="class in org.geotools.referencing.operation">DefaultSingleOperation</A></DD></DL><HR><DL><DT>public class <B>AbstractCoordinateOperation</B><DT>extends <A HREF="../../../../org/geotools/referencing/AbstractIdentifiedObject.html" title="class in org.geotools.referencing">AbstractIdentifiedObject</A><DT>implements CoordinateOperation</DL><P>Establishes an association between a source and a target coordinate reference system, and provides a transform for transforming coordinates in the source CRS to coordinates in the target CRS. Many but not all coordinate operations (from coordinate reference system <VAR>A</VAR> to coordinate reference system <VAR>B</VAR>) also uniquely define the inverse operation (from coordinate reference system <VAR>B</VAR> to coordinate reference system <VAR>A</VAR>). In some cases, the operation method algorithm for the inverse operation is the same as for the forward algorithm, but the signs of some operation parameter values must be reversed. In other cases, different algorithms are required for the forward and inverse operations, but the same operation parameter values are used. If (some) entirely different parameter values are needed, a different coordinate operation shall be defined. <p> This class is conceptually <cite>abstract</cite>, even if it is technically possible to instantiate it. Typical applications should create instances of the most specific subclass with prefix instead. An exception to this rule may occurs when it is not possible to identify the exact type.<P><P><DL><DT><B>Since:</B></DT> <DD>2.1</DD><DT><B>Author:</B></DT> <DD>Martin Desruisseaux</DD><DT><B>See Also:</B><DD><A HREF="../../../../serialized-form.html#org.geotools.referencing.operation.AbstractCoordinateOperation">Serialized Form</A><DT><B>Module:</B></DT><DD><CODE><B>module/referencing</B></CODE> (<A HREF="http://maven.geotools.fr/repository/org/geotools/gt2-referencing/"><CODE>gt2-referencing.jar</CODE></A>) (<A HREF="http://maven.geotools.fr/reports/referencing/index.html">Maven report</A>) (<A HREF="http://svn.geotools.org/geotools/tags/2.3.2/module/referencing/src/org/geotools/referencing/operation/AbstractCoordinateOperation.java">SVN head</A>)</DD></DL><HR><P><!-- ======== NESTED CLASS SUMMARY ======== --><!-- =========== FIELD SUMMARY =========== --><A NAME="field_summary"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=2><FONT SIZE="+2"><B>Field Summary</B></FONT></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static PositionalAccuracy[]</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../org/geotools/referencing/operation/AbstractCoordinateOperation.html#EMPTY_ACCURACY_ARRAY">EMPTY_ACCURACY_ARRAY</A></B></CODE><BR> An empty array of positional accuracy. </TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected CoordinateReferenceSystem</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../org/geotools/referencing/operation/AbstractCoordinateOperation.html#sourceCRS">sourceCRS</A></B></CODE><BR> The source CRS, or if not available.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected CoordinateReferenceSystem</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../org/geotools/referencing/operation/AbstractCoordinateOperation.html#targetCRS">targetCRS</A></B></CODE><BR> The target CRS, or if not available.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected MathTransform</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../org/geotools/referencing/operation/AbstractCoordinateOperation.html#transform">transform</A></B></CODE><BR> Transform from positions in the <A HREF="../../../../org/geotools/referencing/operation/AbstractCoordinateOperation.html#getSourceCRS()">source coordinate reference system</A> to positions in the <A HREF="../../../../org/geotools/referencing/operation/AbstractCoordinateOperation.html#getTargetCRS()">target coordinate reference system</A>.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected Extent</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../org/geotools/referencing/operation/AbstractCoordinateOperation.html#validArea">validArea</A></B></CODE><BR> Area in which this operation is valid, or if not available.</TD></TR></TABLE> <A NAME="fields_inherited_from_class_AbstractIdentifiedObject"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TD><B>Fields inherited from class <A HREF="../../../../org/geotools/referencing/AbstractIdentifiedObject.html" title="class in org.geotools.referencing">AbstractIdentifiedObject</A></B></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><A HREF="../../../../org/geotools/referencing/AbstractIdentifiedObject.html#EMPTY_ALIAS_ARRAY">EMPTY_ALIAS_ARRAY</A>, <A HREF="../../../../org/geotools/referencing/AbstractIdentifiedObject.html#EMPTY_IDENTIFIER_ARRAY">EMPTY_IDENTIFIER_ARRAY</A>, <A HREF="../../../../org/geotools/referencing/AbstractIdentifiedObject.html#IDENTIFIER_COMPARATOR">IDENTIFIER_COMPARATOR</A>, <A HREF="../../../../org/geotools/referencing/AbstractIdentifiedObject.html#NAME_COMPARATOR">NAME_COMPARATOR</A>, <A HREF="../../../../org/geotools/referencing/AbstractIdentifiedObject.html#REMARKS_COMPARATOR">REMARKS_COMPARATOR</A></CODE></TD></TR></TABLE> <A NAME="fields_inherited_from_class_CoordinateOperation"><!-- --></A>⌨️ 快捷键说明
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